Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual evento está localizado em Northfield, Mn?
 ###Tabelas: CREATE TABLE tackles (tackles_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Solo INT, Total INT, Sacks VARCHAR, Fumble force INT, Fumble rec INT) CREATE TABLE records (records_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Distance VARCHAR, Handler VARCHAR, Event VARCHAR, Location VARCHAR) CREATE TABLE canadian_national_championships_and_canadian_open_together (canadian_national_championships_and_canadian_open_together_id AUTO_INCREMENT PRIMARY KEY, Year INT, Men's singles VARCHAR, Women's singles VARCHAR, Men's doubles VARCHAR, Women's doubles VARCHAR, Mixed doubles VARCHAR) CREATE TABLE end-user_power_tariffs (end-user_power_tariffs_id AUTO_INCREMENT PRIMARY KEY, User VARCHAR, Unit (kWh)/Time range VARCHAR, Tariff ( Rs. /kWh) VARCHAR, Fixed Charge ( Rs. /kWh) VARCHAR, Fuel Adjustment Charge (% of Total Energy Charge) VARCHAR, Max. Demand Charge ( Rs. /kVA) VARCHAR) CREATE TABLE home_grounds (home_grounds_id AUTO_INCREMENT PRIMARY KEY, Stadium VARCHAR, Years VARCHAR, Played INT, Wins INT, Losses INT, Draw VARCHAR, Win Percentage VARCHAR)  
SELECT Event FROM records WHERE Location = northfield, mn